Final answer:
Granger mentions the Magna Carta and the Constitution because they are both important documents that protect the rights and freedoms of individuals.
Step-by-step explanation:
In the book Fahrenheit 451, Granger mentions the Magna Carta and the Constitution because they are both important documents that protect the rights and freedoms of individuals. The Magna Carta, signed in 1215, established the principle of due process, which ensures that no free man can be penalized without the lawful judgment of his peers. This concept was later adopted by the United States in its own constitution. Similarly, the Constitution of the United States guarantees various rights and freedoms to its citizens, such as freedom of speech and the right to a fair trial.